Is the sign for 'sweater' the same as 'coat'?
No, 'coat' is signed by mimicking putting on a coat, with the hands moving from the shoulders down and inward as if pulling the lapels together. 'Sweater' involves pulling straight down.
Do I need to touch my body when signing 'sweater'?
You don't need to press your hands firmly against your body, but they should lightly brush or stay very close to your chest and stomach as you pull down.
Can I use this sign for a sweatshirt or hoodie?
Yes, this sign is often used generally for sweaters, sweatshirts, and pullovers. For a hoodie, you might add the sign for 'hood' by bringing your hands over your head.